Namwon Seung clan was one of the Korean clans. Their Bon-gwan was in Namwon, North Jeolla Province. According to the research in 2000, the number of Namwon Seung clan was 613. Their founder was Ming Sheng who was the second emperor of the short-lived Ming Xia dynasty of China. Ming Sheng changed his surname from Ming clan to Seung clan after he exiled himself in Goryeo.